Hot-air furnace



(No Model.)

A. G. BARLER.

HOT AIR FURNACE. No. 463,209; Patented. Nov. 17, 1891.

UNITED 'TATES PATENT OFFICE.

AUGUSTUS C BARLER, OF FREMONT, NEBRASKA.

HOT-AIR FURNACE.

SPECIFICATION forming part of Letters Patent No. 463,209, dated November1'7, 1891.

Application filed February 20, 1890. $e1'ial No. 341,114. (No model.)

T0 on whom it may concern:

Be it known that I, AUGUSTUS C. BARLER, a citizen of the United Statesof America, and a resident of Fremont, in the county of Dodge and Stateof Nebraska, have invented a new and useful Attachment for Hot-AirFurnaces, of which the following is a specification.

My object is to combine an auxiliary radiator and a draft-regulator witha furnace, air-conducting tubes, and and an escape-flue in such a mannerthat the interior of the radiator will be accessible through thedraftregulator, as required, to facilitate cleaning the radiator withoutdetaching or separating any part of the complete device, so that it willbe a permanent furnace attachment and fixture in a building adapted toeconomize fuel and labor in operating a furnace to heat a building.

My invention consists in the construction and combination of anauxiliary radiator and a draftregulator with a furnace, an escape fiue,and air-conveying tubes in a building,

as hereinafter set forth, pointed out in my claim,and illustrated in theaccompanying drawings, in which Figure 1 is a longitudinal section, andFig. 2 a transverse section, of the radiator. Fig. 3 shows my completeinvention applied to a furnace in a building as required for practicaloperation.

A is adrum of common form, that has openended tubes fixed in its top andbottom.

B is an open-ended jacket in concentric position with the drum.

C is a tube fixed to the lower end of the jacket to convey cold air. 7

D is a corresponding tube fixed to the top of the jacket to conveyheated air to a room in a building.

1 is apipe fixed in coinciding openings in the upper portion of the drumA and the jacket B to convey products of combustion from a furnace intothe drum.

2 is a pipe fixed in coinciding openings in the lower portion of thedrum and jacket to convey smoke and waste products of combustion fromthe drum.

I1 is a draft-regulator of common form on the end of the pipe 2.

By thus combining the drum, the jacket, and the draft-regulator, bymeans of single straight piece of open-ended pipe, soot or ashes thataccumulate in the drum can be readily removed through the open-endedpipe that communicates with the drum.

3 is a pipe fixed to the pipe 2 to establish communication with asmoke-fine to carry off the waste products of combustion that enter thedrum through the pipe 1, descend in the drum, pass'out through the pipe2, and ascend through the pipe 3 to a smoke-flue L and a chimney.

The different parts may be made of cast metal in molds or of sheetmetal, and joined together by seaming, riveting, or in any suitable Wayto produce an attachment that is complete in itself and well adapted tobe readily and advantageously applied to and operated with furnaces ofdifferent kinds for heating buildings.

In the practical operation of my invention when applied .to a furnace,as shown and described, the caloric that passes with the smoke into thedrumis absorbed by the wall of the drum and-the open-ended tubes, sothat the aggregate area of their inside surface will be aheating-surface and their outsides a radiating-surface from which thecaloric will be imparted to cold air that is conveyed upward to envelopthe drum, and also to pass into the tubes in the drum to become heatedas it ascends inside of the jacket to the tube that conveys it upwardinto a room in a building.

The draft can be readily regulated in a common way by means of thedraft-regulator and the damper.

I claim as my invention- In an attachment for furnaces, the combi nationof a drum having open-ended tubes fixed in its top and bottom and havingan opening in its upper portion upon one side and another opening in itslower portion upon the opposite side, even with the bottom, an outershell around the drum open at each end and having means for connectingit with pipes leading from the cold air to the interior of the room, andalso having openings in its sides coinciding with the openings in thedrum, a pipe extending through each set of openings, that at the topbeing adapted to engage with the furnace and the lower one being on alevel with the bottom of the drum and having its outer end open andprovided with a hinged door, and a vertical pipe communicating with thelower pipe between the 10 outer end and the outer casing and adapted toengage with apipe leading to the chimney,

Vitnesses:

W. H. LUCROFT, E. J. ROGERS.

